package com.chunlin.testabstract;

public class Circle extends Shape {
    private double r;
    final private static double PI = 3.14;

    public Circle(double r) {
        this.r = r;
    }

    public void draw() {
        System.out.println("圆：r = " + r);
    }

    public void calcArea() {
        area = PI * r * r;
    }
}
